[CentOS] kswapd taking 100% cpu with no swap on system

The particular drives (hardware) you are using have known performance issues; there are a number of reports in Western Digital's forums confirming this, for more than just Linux. · Mon May 9 18:14:11 UTC 2011

On Monday, May 09, 2011 02:06:54 PM Lamar Owen wrote:
> The particular drives (hardware) you are using have known performance issues; there are a number of reports in Western Digital's forums confirming this, for more than just Linux.

For reference:
http://community.wdc.com/t5/Desktop/WD10EARS-slow-slow-slow-slow/td-p/7581
http://www.hv23.net/2010/02/wd10ears-performance-larger-block-size-issues4k/
http://b1mmer.com/linux/wdhdd/